MCP48CMB18T-E/ML

Overview

The MCP48CMB18T-E/ML is an octal-channel, 10-bit Digital-to-Analog Converter (DAC) featuring Multi-Time Programmable (MTP) nonvolatile memory. It operates on a single supply voltage ranging from 2.7V to 5.5V, with reduced specifications available between 1.8V and 2.7V. The device utilizes a resistor-string architecture providing 1 LSb Integral Nonlinearity (INL). It supports SPI serial interfaces with write speeds up to 50 MHz and read speeds up to 25 MHz. Key features include selectable gain options of 1x or 2x, multiple reference sources including internal band gap, and power-down modes for low-power applications.

Feature Summary

• Integrates MTP nonvolatile memory for persistent storage of DAC codes and configuration registers without external components.
• Provides buffered voltage outputs with selectable unity or 2x gain capabilities for flexible signal conditioning.
• Supports high-speed SPI communication compatible with standard '00' and '11' modes for efficient data transfer.
• Includes Power-on Reset (POR) and Brown-out Reset (BOR) protection to ensure reliable startup behavior.

Applications

• Set point or offset trimming in industrial control systems
• Sensor calibration requiring precise analog output adjustments
• Low-power portable instrumentation devices
• Data acquisition systems needing multi-channel signal generation
• Motor control circuits requiring accurate voltage references

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and temperature range. Ensure that the required MTP programming voltage and current capabilities are supported by the host system design. Confirm interface compatibility with the target microcontroller's SPI settings before finalizing procurement decisions.

Selection Notes

Select this component when multiple independent analog outputs are required within a compact footprint. Consider the MTP feature if power-up state retention is critical to avoid initialization delays. Evaluate the 10-bit resolution against application accuracy requirements and verify that the operating voltage range aligns with the system's power supply constraints.

Part Context

This part belongs to the MCP48CXBX4/8 family, which includes quad and octal variants with 8, 10, or 12-bit resolutions. The 'M' designation indicates the presence of nonvolatile MTP memory, distinguishing it from volatile RAM-based counterparts. The 'B' signifies 10-bit resolution, while '18' denotes the octal channel configuration.

Replacement Considerations

Direct replacements within the same family include other MCP48CMBxx parts with different resolutions or channel counts. Cross-family alternatives may require verification of pin compatibility and memory architecture differences. Ensure any substitute maintains the required SPI interface timing and MTP programming voltage specifications.